LETTER OF SUBMITTAL. 
If. S, Department of Agriculture, 
Division of Entomology, 
Washington , D. C ., July 5, 1887. 
Sir: I have tlie honor to submit for publication Bulletin No. 16 of 
this Division, being a list of the entomological writings of Dr. A. S. 
Packard, with systematic and general index, prepared by Mr. Samuel 
Henshaw. Dr. Packard has been so long and favorably known as a 
writer upon insects both in their structural, biologic, and economic rela- 
tions, and has been for so many years connected with Government ento- 
mological work, that this Bulletin will be welcomed by all interested in 
the subject and of great aid in the divisional work. 
Respectfully, 
G. Y. RILEY, 
Entomologist. 
Hon. Norman J. Colman, 
Commissioner of Agriculture. 
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